Database - Interview Questions and Answers for 'Informatica' | Search Java Interview Question - javasearch.buggybread.com
Javasearch.buggybread.com

Search Interview Questions


 More than 3000 questions in repository.
 There are more than 900 unanswered questions.
Click here and help us by providing the answer.
 Have a video suggestion.
Click Correct / Improve and please let us know.
Label / Company      Label / Company / Text

   



Database - Interview Questions and Answers for 'Informatica' - 3 question(s) found - Order By Newest

Frequently asked to fresh graduates.
 Q1. What is ACID ?Database2016-11-04 08:09:44

Ans. ACID stands for Atomicity, Consistency, Isolation, Durability is a set of properties of database transactions.

Atomicity means all or nothing. i.e parts of a transaction shouldn't commit if any one of them fails. Either the whole transaction should succeed or it should be complete rollback.

Consistency means that any transaction should lead database from one stabe state to another.

Isolation means that the execution of transaction results in a system state that would be obtained if transactions were executed serially.

Durability means that when a transaction is committed it forms the permanent state of database.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     database  acid     Asked in 7 Companies      Intermediate

Try 1 Question(s) Test


Related Questions

  What is database deadlock ? How can we avoid them?
  What things you would care about to improve the performance of Application if its identified that its DB communication that needs to be improved ?
  If you are given a choice to implement the code to either Insert a Record or Update if already exist, Which approach will you follow ?
  What is the use of @GeneratedValue annotation in Hibernate?
 What happens to backups if we delete the RDS instance ?
  What is a Cursor ?
  What are temp tables ?
  Does SQL allow null values ? Can we use it within Where clause ?
  Write an SQL to find all records having all upper case alphanumeric characters in a field ?


 Q2. What is a Database Procedure ?Database2016-10-18 11:27:59

Ans. Stored procedures are a batch of SQL statements along with programming constructs ( if else, loops etc ) and stored as a single program that can be called by different clients and hence reused.


 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     database  stored procedure     Asked in 2 Companies      basic        frequent


Related Questions

  What is database deadlock ? How can we avoid them?
  What things you would care about to improve the performance of Application if its identified that its DB communication that needs to be improved ?
  If you are given a choice to implement the code to either Insert a Record or Update if already exist, Which approach will you follow ?
 What is ACID ?
  What is the use of @GeneratedValue annotation in Hibernate?
 What happens to backups if we delete the RDS instance ?
  What is a Cursor ?
  What are temp tables ?
  Does SQL allow null values ? Can we use it within Where clause ?
  Write an SQL to find all records having all upper case alphanumeric characters in a field ?


 Q3. Describe SQL JoinsDatabase2018-02-08 00:11:24

Ans. Oracle having following types of joins these are also called 8i joins. There are:

1. Equi (or) Inner join
2. Non Equi join
3.Self join
4.Outer join

Oracle also support the 9i (or) ANSI standard joins.There are:

1.Inner join
2.Left outer join
3.Right outer join
4.Full outer join
5.Natural join

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     sql joins  sql     Asked in 2 Companies


Related Questions

 If Table A has 100 records and Table B has 50 records , how many records will the left join of Table A with Table B generate ?
 If Table A has 100 records and Table B has 50 records , how many records will the right join of Table A with Table B generate ?
 If Table A has 0 records and Table B has 50 records , how many records will the equi join of Table generate ?



Help us and Others Improve. Please let us know the questions asked in any of your previous interview.

Any input from you will be highly appreciated and It will unlock the application for 10 more requests.

Company Name:
Questions Asked: